21981276

素因数分解:

$2^2\times 3^2\times {\mathrm{59}}^1\times {\mathrm{79}}^1\times {\mathrm{131}}^1$

素因数の和:279

約数の個数: 72

約数和(自身を含む): 57657600

約数和(自身を除く): 35676324

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 59, 79, 118, 131, 158, 177, 236, 237, 262, 316, 354, 393, 474, 524, 531, 708, 711, 786, 948, 1062, 1179, 1422, 1572, 2124, 2358, 2844, 4661, 4716, 7729, 9322, 10349, 13983, 15458, 18644, 20698, 23187, 27966, 30916, 31047, 41396, 41949, 46374, 55932, 62094, 69561, 83898, 92748, 93141, 124188, 139122, 167796, 186282, 278244, 372564, 610591, 1221182, 1831773, 2442364, 3663546, 5495319, 7327092, 10990638, 21981276]

約数ペア:

[(1, 21981276), (2, 10990638), (3, 7327092), (4, 5495319), (6, 3663546), (9, 2442364), (12, 1831773), (18, 1221182), (36, 610591), (59, 372564), (79, 278244), (118, 186282), (131, 167796), (158, 139122), (177, 124188), (236, 93141), (237, 92748), (262, 83898), (316, 69561), (354, 62094), (393, 55932), (474, 46374), (524, 41949), (531, 41396), (708, 31047), (711, 30916), (786, 27966), (948, 23187), (1062, 20698), (1179, 18644), (1422, 15458), (1572, 13983), (2124, 10349), (2358, 9322), (2844, 7729), (4661, 4716)]